Added actix-jwt-cookies and actix-ws-broadcaster to README

[Necoo33]

PR Type

Other

PR Checklist

• [x] Tests for the changes have been added / updated.
• [x] Documentation comments have been added / updated.
• [x] A changelog entry has been made for the appropriate packages.
• [x] Format code with the nightly rustfmt (cargo +nightly fmt).

Overview

Added actix-jwt-cookies and actix-ws-broadcaster to Community Crates section of the README file.